Finding the Fourth Proportional to 279,819.16, 386,150.96 and 152,494.72

Step by Step Solution

1. Step 1: Write the proportion equation
   279,819.16 : 386,150.96 = 152,494.72 : x
2. Step 2: Convert to fraction form
   279,819.16/386,150.96 = 152,494.72/x
3. Step 3: Cross multiply
   279,819.16x = 386,150.96 × 152,494.72
4. Step 4: Simplify right side
   279,819.16x = 58,885,982,522.93
5. Step 5: Solve for x
   x = 58,885,982,522.93/279,819.16
6. Step 6: Final answer
   x = 210,443.00